Quote:
Originally Posted by oddshooter
I have had the same problem.
You may be reducing the diameter of every bullet you seat. I don't care what size it is.
Seating dies can all swage down the diameter when it pushes the lead boolit into the case. You spend time and money getting a correct size boolit only to shrink it during seating. Bad.
The answer is to get the M style cowboy dies from RCBS or Redding. Then call for a new stem sized correctly to .431. They will do it for free.
The M style creates a "nest" that will accept the boolit without swaging it down.
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Good advice. Other's mileage may vary, but for my money, "M" dies are the ticket - for cast bullets.
I was not aware of them when I had my .44's, but use Lyman "M" expanders exclusively today, for cast (& even plated) .38's, .357's, & .45's. Requires an extra step in the "progressive" Dillon 550 process, but well worth it.